Definitely the hunter. Enhancement shaman has a lot of burst but they're pretty much glass cannon. Just get a hunter, pop cooldown macro and let your pets do the job. The warlock needs time to build up embers and space to let chaos bolts fly out to be really effective (could still work with the shaman but I'm guessing a hunter is going to do a lot better).

Dual DD wouldn't be my first choice for 2on2. Expect a lot of frustrating moments against the countless warrior/mage+heal (paladin, shaman, druid) teams out there.
There isn't a clear winner between enha+hunter and enha+lock imo. CC/control vs. more burst. Try both in BGs, take what works better for you.
Most successful option: Your teammate switches his specc to resto

Originally Posted by Grimord

Definitely the hunter. Enhancement shaman has a lot of burst but they're pretty much glass cannon. Just get a hunter, pop cooldown macro and let your pets do the job. The warlock needs time to build up embers and space to let chaos bolts fly out to be really effective (could still work with the shaman but I'm guessing a hunter is going to do a lot better).

The recent hotfix took the brutal burst from hunters (thank god). A well played hunter has tons of options and strong cc, but nowhere near the burst of warriors/ frostmages anymore.